blake



L. R..BLAKE.

SEWING MAGHINE.

Patented Feb. 11. 1868.

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Letters Patent No. 74,289, dated February 11, 1868; antedated Decemherl,1867.

IMPROVEMENT IN SEWING-MACHINES.

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TO ALL WHOM IT MAY CONCERN: 7,

Be it known that I, LYMANB. BLAKE, of Boston, in the county of Suffolk.and State of Massachusetts, have invented a certain new and usefulImprovement in Sewingdl-Iaehines; and I do hereby declare that thefollowing, taken in connection with the drawings which accompany andform nart of this specification, is a description of my inventionsuflicient to enable those skilled in the art to practisefit.

i The invention relates to the adaptation of sewing-mechanism to theconstruction of hydraulic hose, and

consists in combining with a cylinder or work-supporting arm, and theloop-mechanism contained within said arm, and the needle andfeed-mechanism, a sleeve or tube surrounding such work-supporting arm,just in rear of the feed and stitch-forming mechanism, such'sleeveserving to presentthe material to the action of the feed,

t resser-foot, and needle in a tubular form, with the'edges lapped inposition forpresentation to the stitch-forming mechanism.

The drawing shows the mechanism of 'a sewing-machine embodying myinvention sufiiciently to enable the improvement to be clearlyunderstood.

a denotes a frame for supporting the mechanism, 6 the needle-bar, whichis shown as carrying two hook needles, 0, each having a cast-off, d, andworking in connection with loopers or looping-mechanism contained withina long arm or cylinder, e, and with a feed-bar,f, and presser-foot gand' the upper or flattened worksupporting surface of the arm e, to formsuccessive stitches in the material to'be operated upon.

As this feeding and stitch-forming mechanism does not form thesubject atpresent claimed, and as it is in many respects the same as exists insome previous constructions, and is in its general operation-wellunderstood, it need not be specifically described, the co-operativemovements being produced in any suitable manner.

, Just in rear of the'needles and resser-foot a tube or sleeve, ]z, ismounted, this sleeve being open at both ends, and surrounding the arm c,with a space entirely around it, between its inner surface and thesurface of the work-supporting arm.v This sleeve forms a guide to insurethe proper deliverance of the'work or strip being sewed, in a tubularform, to the action of the feed and stitch-forming mechanism, and withone edge lapped over the other to unite the edges. I

In operating the machine thematerial, first made into a strip of theproper width to form the hose, is bent by hand around the arm e, withits opposite edges lapped, and its end is thrust through the tube andunder the presser-foot and need-1e, {which are raised for this purpose,)the resser-foot holding the two edges together while they are beingsewed, and, as the material is being fed, the proper relation of theopposite edges, with respect to each other, is determined and insured bythe sleeve h, the material being guided, as it enters the tube, in anysuitable manner. 7

I claim, in combination with the loop-mechanism, containing thework-supporting arm and the feed and. stitch-forming mechanism, theguidesleeve 7t, arranged and operating substantially as set forth.

LYMAN R. BLAKE.

Witnesses:

J. B. Caesar, F. Gonna.

